CN107783021A - A kind of test module for the experiment of crimp type IGBT device power cycle - Google Patents

A kind of test module for the experiment of crimp type IGBT device power cycle Download PDF

Info

Publication number
CN107783021A
CN107783021A CN201710795463.5A CN201710795463A CN107783021A CN 107783021 A CN107783021 A CN 107783021A CN 201710795463 A CN201710795463 A CN 201710795463A CN 107783021 A CN107783021 A CN 107783021A
Authority
CN
China
Prior art keywords
cooling water
device under
test
top pressure
test module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710795463.5A
Other languages
Chinese (zh)
Inventor
张雷
李金元
潘艳
崔梅婷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Global Energy Interconnection Research Institute
Original Assignee
Global Energy Interconnection Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Global Energy Interconnection Research Institute filed Critical Global Energy Interconnection Research Institute
Priority to CN201710795463.5A priority Critical patent/CN107783021A/en
Publication of CN107783021A publication Critical patent/CN107783021A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/26Testing of individual semiconductor devices
    • G01R31/2607Circuits therefor
    • G01R31/2608Circuits therefor for testing bipolar transistors
    • G01R31/2619Circuits therefor for testing bipolar transistors for measuring thermal properties thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The present invention provides a kind of test module for the experiment of crimp type IGBT device power cycle, including:Test suite, the test suite include the device under test of multigroup setting that is connected in parallel to each other;Circulation is provided with multigroup cooling water assembly being connected respectively with each device under test, and cooling water channel cools down to coupled device under test respectively described in every group.It is arranged in parallel between multiple device under tests, and it is respectively connected with independent cooling water assembly on each device under test, cooling procedure between multiple device under tests is not interfere with each other, the problem of effectively prevent cooling capacity deficiency caused by being arranged in series between the cooling water of multiple device under tests in the prior art occurs, and can effectively improve testing efficiency.

Description

A kind of test module for the experiment of crimp type IGBT device power cycle
Technical field
The present invention relates to crimp type IGBT device technical field, and in particular to one kind is followed for crimp type IGBT device power The test module of ring test.
Background technology
Water-cooling system and test fixture are primarily directed to solder type IGBT devices in the power circulation test platform applied at present Part design, the radiating of solder type IGBT device one side, installation and wiring are simple.
Compared with solder type device, crimp type IGBT device power consumption is high, and volume is big, and installation crimping requires high therefore multiple Problems be present when being tested on power circulation test platform in crimp type IGBT device:Original test platform is cooling down Water route is in being arranged in series, and cooling water flows serially through multiple IGBT devices to be measured, when cooling water flows through the IGBT devices being located behind During part, water temperature is very high, now to the cooling capacity rapid drawdown of device.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome of the prior art surveys to multiple crimp type IGBT During examination, the defects of cooling effectiveness is not high.
Therefore, the present invention provides a kind of test module for the experiment of crimp type IGBT device power cycle, including:
Test suite, the test suite include the device under test of multigroup setting that is connected in parallel to each other;
Circulation, which is provided with multigroup cooling water assembly being connected respectively with each device under test, every group The cooling water channel cools down to coupled device under test respectively.
The test suite includes:Several device under tests being arranged side by side each other along short transverse, it is multiple described to be measured Device forms device group;Support component, the lower section of the device under test is arranged on, to support the device group;And top pressure Component, the top of the device under test is arranged on, to being limited above the device group.
It is connected between several described device under tests by alignment pin.
The cooling water assembly includes:Water-filled radiator, both ends of each device under test along short transverse are arranged on, The water-filled radiator internal flow has cooling water;Cooling water pipe, it is connected with the water-filled radiator, the cooling water pipe There are water inlet end and water side.
The circulation also includes:Water inlet pipe, the water inlet end of the every cooling water pipe be connected to simultaneously it is described enter On water pipe;And return pipe, the water side of the cooling water pipe is connected, the cooling water after heating to be exported.
The support component includes:Lower flange;Disk spring, it is arranged between the lower flange and the device group, uses So that the device group is adjacent on the top pressure component.
The top pressure component includes:Upper flange;Top pressure seat, it is connected at the upper flange axle center, cover is buckled in the device The top of group;Top pressure guide rod, to be pressurizeed to the top pressure seat, the top pressure seat is set to be pressed on the top of the device group End;Locking nut, it is arranged between the upper flange and the top pressure guide rod, to limit the motion of the top pressure guide rod.
The contact surface of the top pressure guide rod and the top pressure seat is attached by sphere.
The water inlet pipe and the outlet pipe are provided with air bleeding valve.
Matheson and Dresser joint is provided between the water side of the return pipe and the cooling water pipe.
Technical solution of the present invention, have the following advantages that:
1. a kind of test module for the experiment of crimp type IGBT device power cycle provided by the invention, test suite, The test suite includes the device under test of multigroup setting that is connected in parallel to each other;Simultaneously in circulation be provided with it is multigroup respectively with often The cooling water assembly that the individual device under test is connected, cooling water channel enters to coupled device under test respectively described in every group Row cooling.
In the prior art, test platform is in be arranged in series to the water route cooled down, and cooling water flows serially through multiple to be measured IGBT device, when cooling water flows through the IGBT device being located behind, water temperature is very high, now rapid to the cooling capacity of device Drop.
Test module provided by the invention, it is arranged in parallel between multiple device under tests, and is all connected with each device under test There is an independent cooling water assembly, the cooling procedure between multiple device under tests is not interfere with each other, and effectively prevent in the prior art Occur caused by being arranged in series between the cooling water of multiple device under tests the problem of cooling capacity deficiency, test effect can be effectively improved Rate.
A kind of 2. test module for the experiment of crimp type IGBT device power cycle provided by the invention, described in several It is connected between device under test by alignment pin.Ensure that the connective stability of multiple device under tests.
3. a kind of test module for the experiment of crimp type IGBT device power cycle provided by the invention, the recirculated water System also includes:Water inlet pipe, the water inlet end of the every cooling water pipe are connected on the water inlet pipe simultaneously;And return pipe, The water side of the cooling water pipe is connected, the cooling water after heating to be exported.
Cooling water is entered in more cooling water pipes simultaneously by water inlet pipe, and the cooling water in cooling water pipe flows after heating Enter in return pipe and flow out, stably circulation line is formed by water inlet pipe, cooling water pipe and return pipe, effectively ensured cold The stability of water process.
4. a kind of test module for the experiment of crimp type IGBT device power cycle provided by the invention, the top pressure are led The contact surface of bar and the top pressure seat is attached by sphere.
Coordinate compared to traditional plane, the mode of mating spherical surfaces can be easily to top pressure guide rod and the axis of top pressure seat Position is adjusted, and improves the flexibility of position.
5. a kind of test module for the experiment of crimp type IGBT device power cycle provided by the invention, the water inlet pipe Air bleeding valve is provided with the outlet pipe.
By air bleeding valve, the gas that can prevent from retaining in water inlet pipe and outlet pipe is saved bit by bit in pipeline, causes cooling water Can not proper flow phenomenon occur.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of described test module provided by the invention;
Fig. 2 is the side view of described test module provided by the invention;
Fig. 3 is the structural representation of described test suite provided by the invention;
Description of reference numerals:
1- test suites;2- device under tests;3- support components;31- lower flanges;32- disk springs;33- pallets;4- top pressures Component;41- upper flanges;42- top pressure seats;43- top pressure guide rods;44- locking nuts;5- alignment pins;6- water-filled radiators;7- is cooled down Water pipe;8- water inlet pipes;9- return pipes;10- air bleeding valves;11- guide sleeves;12- insulated tension poles.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ", The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can To be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other It is be combined with each other into conflict can.
Embodiment 1
The present embodiment provides a kind of test module for the experiment of crimp type IGBT device power cycle, including:Test group Part 1, the test suite 1 include the device under test 2 of multigroup setting that is connected in parallel to each other;Circulation be provided with it is multigroup respectively with often The cooling water assembly that the individual device under test 2 is connected, cooling water channel described in every group is respectively to coupled device under test 2 Cooled down.
In the prior art, test platform is in be arranged in series to the water route cooled down, and cooling water flows serially through multiple to be measured IGBT device, when cooling water flows through the IGBT device being located behind, water temperature is very high, now rapid to the cooling capacity of device Drop.
The test module that the present embodiment provides, it is arranged in parallel between multiple device under tests 2, and on each device under test 2 It is connected with independent cooling water assembly, the cooling procedure between multiple device under tests 2 is not interfere with each other, and effectively prevent existing skill Occur caused by being arranged in series in art between the cooling water of multiple device under tests 2 the problem of cooling capacity deficiency, can effectively improve Testing efficiency.
In the present embodiment, the water inlet end of the every cooling water pipe 7 is connected on the water inlet pipe 8 simultaneously;Return pipe 9 connects The water side of the cooling water pipe 7 is connect, the cooling water after heating to be exported.Meanwhile the water inlet pipe 8 and institute State outlet pipe and be provided with air bleeding valve 10, the gas that can prevent from retaining in water inlet pipe 8 and outlet pipe is saved bit by bit in pipeline, caused cold But water can not proper flow phenomenon occur.
In the present embodiment, Matheson and Dresser joint is provided between the water side of the return pipe 9 and the cooling water pipe 7.It is anti-to miss Head can be water-tight after extraction with fast insert-pull, improves the stability in use of test suite 1.
Specifically, the cooling water assembly includes:Water-filled radiator 6, each device under test 2 is arranged on along height side To both ends, the internal flow of water-filled radiator 6 has cooling water;Cooling water pipe 7, it is connected with the water-filled radiator 6, institute Stating cooling water pipe 7 has water inlet end and water side.
In the present embodiment, the test suite 1 includes:Several device under tests 2 being arranged side by side each other along short transverse, It is connected between several described device under tests 2 by alignment pin 5.Multiple device under tests 2 form device group;Support component 3, The lower section of the device under test 2 is arranged on, to support the device group;And top pressure component 4, it is arranged on the device to be measured The top of part 2, to being limited above the device group.
Specifically, the support component 3 includes:Lower flange 31;Disk spring 32, be arranged on the lower flange 31 with it is described Between device group, to make the device group be adjacent on the top pressure component 4.It is provided with simultaneously in lower flange 31 with apparatus assembly Pallet 33.
In the present embodiment, the top pressure component 4 includes:Upper flange 41;Top pressure seat 42, it is connected to the axle center of upper flange 41 Place, cover are buckled in the top of the device group;Top pressure guide rod 43, to be pressurizeed to the top pressure seat 42, make the top pressure seat 42 are pressed on the top of the device group;Locking nut, it is arranged between the upper flange 41 and the top pressure guide rod 43, to Limit the motion of the top pressure guide rod 43.
Guide sleeve 11 is equipped with the center of the upper flange 41, the top pressure guide rod 43 is located in guide sleeve 11, is led to Cross the kinetic stability that guide sleeve 11 improves top pressure guide rod 43.
In the present embodiment, it is attached between upper flange 41 and lower flange 31 by insulated tension pole 12, it is ensured that structure Stability.
In the present embodiment, the contact surface of the top pressure guide rod 43 and the top pressure seat 42 is attached by sphere.Compare Coordinate in traditional plane, the mode of mating spherical surfaces can be carried out easily to the axial location of top pressure guide rod 43 and top pressure seat 42 Adjustment, improves the flexibility of position.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or Among changing still in the protection domain of the invention.

Claims (10)

  1. A kind of 1. test module for the experiment of crimp type IGBT device power cycle, it is characterised in that including:
    Test suite (1), the test suite (1) include the device under test (2) of multigroup setting that is connected in parallel to each other;
    Circulation, it which is provided with multigroup cooling water assembly being connected respectively with each device under test (2), every group of institute Cooling water channel is stated respectively to cool down coupled device under test (2).
  2. 2. test module according to claim 1, it is characterised in that the test suite (1) includes:
    Several device under tests being arranged side by side each other along short transverse (2), multiple device under tests (2) form device group;
    Support component (3), the lower section of the device under test (2) is arranged on, to support the device group;
    And
    Top pressure component (4), the top of the device under test (2) is arranged on, to being limited above the device group.
  3. 3. test module according to claim 2, it is characterised in that by fixed between several described device under tests (2) Position pin (5) is connected.
  4. 4. the test module according to Claims 2 or 3, it is characterised in that the cooling water assembly includes:
    Water-filled radiator (6), it is arranged on both ends of each device under test (2) along short transverse, the water-filled radiator (6) Internal flow has cooling water;
    Cooling water pipe (7), it is connected with the water-filled radiator (6), the cooling water pipe (7) has water inlet end and water side.
  5. 5. test module according to claim 4, it is characterised in that the circulation also includes:
    Water inlet pipe (8), the water inlet end of the every cooling water pipe (7) are connected on the water inlet pipe (8) simultaneously;
    And
    Return pipe (9), the water side of the cooling water pipe (7) is connected, the cooling water after heating to be exported.
  6. 6. test module according to claim 2, it is characterised in that the support component (3) includes:
    Lower flange (31);
    Disk spring (32), it is arranged between the lower flange (31) and the device group, be adjacent to the device group On the top pressure component (4).
  7. 7. test module according to claim 2, it is characterised in that the top pressure component (4) includes:
    Upper flange (41);
    Top pressure seat (42), it is connected at the upper flange (41) axle center, cover is buckled in the top of the device group;
    Top pressure guide rod (43), to be pressurizeed to the top pressure seat (42), the top pressure seat (42) is set to be pressed on the device The top of group;
    Locking nut (44), it is arranged between the upper flange (41) and the top pressure guide rod (43), to limit the top pressure The motion of guide rod (43).
  8. 8. test module according to claim 7, it is characterised in that the top pressure guide rod (43) and the top pressure seat (42) Contact surface be attached by sphere.
  9. 9. test module according to claim 4, it is characterised in that the water inlet pipe (8) and the outlet pipe are provided with Air bleeding valve (10).
  10. 10. test module according to claim 5, it is characterised in that the return pipe (9) and the cooling water pipe (7) Water side between be provided with Matheson and Dresser joint.
CN201710795463.5A 2017-09-06 2017-09-06 A kind of test module for the experiment of crimp type IGBT device power cycle Pending CN107783021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710795463.5A CN107783021A (en) 2017-09-06 2017-09-06 A kind of test module for the experiment of crimp type IGBT device power cycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710795463.5A CN107783021A (en) 2017-09-06 2017-09-06 A kind of test module for the experiment of crimp type IGBT device power cycle

Publications (1)

Publication Number Publication Date
CN107783021A true CN107783021A (en) 2018-03-09

Family

ID=61437576

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710795463.5A Pending CN107783021A (en) 2017-09-06 2017-09-06 A kind of test module for the experiment of crimp type IGBT device power cycle

Country Status (1)

Country Link
CN (1) CN107783021A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108387831A (en) * 2018-06-04 2018-08-10 华北电力大学 A kind of power cycle pilot system of 3000A semiconductor devices
CN108549004A (en) * 2018-07-03 2018-09-18 北京智创骏驰电气科技有限公司 A kind of device testing apparatus
CN108646163A (en) * 2018-06-22 2018-10-12 华北电力大学 A kind of power circulation test system of semiconductor devices
CN108802590A (en) * 2018-06-22 2018-11-13 华北电力大学 A kind of the power circulation test method and test system of semiconductor devices
CN109030878A (en) * 2018-07-23 2018-12-18 全球能源互联网研究院有限公司 A kind of test module of hydraulic installalion structure and its composition
CN109521347A (en) * 2018-10-28 2019-03-26 北京工业大学 The synchronous pwm power circulation experiment device of multiple automotive grade IGBT modules
CN111239576A (en) * 2018-11-29 2020-06-05 株洲中车时代电气股份有限公司 Constant power cycle test circuit and method based on power loss linear control
CN113391183A (en) * 2021-08-17 2021-09-14 苏师大半导体材料与设备研究院(邳州)有限公司 Semiconductor device temperature characteristic measuring instrument
CN114295923A (en) * 2021-12-22 2022-04-08 上海临港电力电子研究有限公司 Testing device and application method of power module
CN117148083A (en) * 2023-06-15 2023-12-01 杭州高裕电子科技股份有限公司 SIC power cycle test method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204271645U (en) * 2014-11-25 2015-04-15 北京博旺天成科技发展有限公司 Be applied to the water-cooling system of active power compensator
CN104795348A (en) * 2015-04-29 2015-07-22 国网智能电网研究院 High-power crimping type IGBT encapsulation module fixture
CN205725433U (en) * 2016-06-24 2016-11-23 西安开天电力电子技术有限公司 A kind of containing absorbing and the compression joint type IGBT two level power unit of drive system
CN205792270U (en) * 2016-06-24 2016-12-07 西安开天电力电子技术有限公司 A kind of containing absorbing and the compression joint type IGBT tri-level power unit of drive system
CN106706963A (en) * 2015-07-28 2017-05-24 国网智能电网研究院 Large power compression type IGBT package module press mounting test clamp

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204271645U (en) * 2014-11-25 2015-04-15 北京博旺天成科技发展有限公司 Be applied to the water-cooling system of active power compensator
CN104795348A (en) * 2015-04-29 2015-07-22 国网智能电网研究院 High-power crimping type IGBT encapsulation module fixture
CN106706963A (en) * 2015-07-28 2017-05-24 国网智能电网研究院 Large power compression type IGBT package module press mounting test clamp
CN205725433U (en) * 2016-06-24 2016-11-23 西安开天电力电子技术有限公司 A kind of containing absorbing and the compression joint type IGBT two level power unit of drive system
CN205792270U (en) * 2016-06-24 2016-12-07 西安开天电力电子技术有限公司 A kind of containing absorbing and the compression joint type IGBT tri-level power unit of drive system

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108387831A (en) * 2018-06-04 2018-08-10 华北电力大学 A kind of power cycle pilot system of 3000A semiconductor devices
CN108387831B (en) * 2018-06-04 2024-01-26 华北电力大学 Power cycle test system of 3000A semiconductor device
CN108646163A (en) * 2018-06-22 2018-10-12 华北电力大学 A kind of power circulation test system of semiconductor devices
CN108802590A (en) * 2018-06-22 2018-11-13 华北电力大学 A kind of the power circulation test method and test system of semiconductor devices
CN108646163B (en) * 2018-06-22 2019-08-06 华北电力大学 A kind of power circulation test system of semiconductor devices
CN108802590B (en) * 2018-06-22 2019-09-03 华北电力大学 A kind of the power circulation test method and test macro of semiconductor devices
CN108549004A (en) * 2018-07-03 2018-09-18 北京智创骏驰电气科技有限公司 A kind of device testing apparatus
CN109030878A (en) * 2018-07-23 2018-12-18 全球能源互联网研究院有限公司 A kind of test module of hydraulic installalion structure and its composition
CN109521347B (en) * 2018-10-28 2021-11-26 北京工业大学 Synchronous PWM power cycle experimental device for multiple automobile-level IGBT modules
CN109521347A (en) * 2018-10-28 2019-03-26 北京工业大学 The synchronous pwm power circulation experiment device of multiple automotive grade IGBT modules
CN111239576B (en) * 2018-11-29 2021-08-10 株洲中车时代半导体有限公司 Constant power cycle test circuit and method based on power loss linear control
CN111239576A (en) * 2018-11-29 2020-06-05 株洲中车时代电气股份有限公司 Constant power cycle test circuit and method based on power loss linear control
CN113391183A (en) * 2021-08-17 2021-09-14 苏师大半导体材料与设备研究院(邳州)有限公司 Semiconductor device temperature characteristic measuring instrument
CN113391183B (en) * 2021-08-17 2021-11-19 苏师大半导体材料与设备研究院(邳州)有限公司 Semiconductor device temperature characteristic measuring instrument
CN114295923A (en) * 2021-12-22 2022-04-08 上海临港电力电子研究有限公司 Testing device and application method of power module
CN114295923B (en) * 2021-12-22 2023-06-16 上海临港电力电子研究有限公司 Testing device and application method of power module
CN117148083A (en) * 2023-06-15 2023-12-01 杭州高裕电子科技股份有限公司 SIC power cycle test method
CN117148083B (en) * 2023-06-15 2024-03-08 杭州高裕电子科技股份有限公司 SIC power cycle test method

Similar Documents

Publication Publication Date Title
CN107783021A (en) A kind of test module for the experiment of crimp type IGBT device power cycle
KR101653453B1 (en) Cooling system for cooling both sides of power semiconductor
CN103138536B (en) Converter cooling device
CN102486347A (en) Water-cooled condenser
KR101480633B1 (en) EGR Cooler and EGR Cooler Device
WO2020103169A1 (en) Cooling device and system
BR102014008653A2 (en) piston cooling device, internal combustion engine mechanism and method of manufacture
KR20140010020A (en) Device for cooling charge air, system for conditioning charge air, and intake module for an internal combustion engine
CN103946499A (en) Device for cooling a metering valve
JP4571678B2 (en) Device for exhaust gas recirculation of an internal combustion engine in a vehicle
US20130327499A1 (en) Egr cooler and method
KR20180114568A (en) Egr cooler
CN105317983A (en) Oil cooler
CN104457335A (en) Coiled pipe heat exchanger
JP2009064830A (en) Prober
BR102014009798A2 (en) compression device
US20160084128A1 (en) Apparatus for supplying a coolant to a heat exchanger, preferably for an exhaust gas cooler of an internal combustion engine of a motor vehicle
CN212148461U (en) Car fills electric pile cooling system based on liquid cooling technique
CN113218608A (en) Sensor water-cooling base for testing exhaust system
CN207235331U (en) The one body swimming cooling system of high-power charging pile
CN210892275U (en) Anti-freezing device for cooling water pipe
EP2784285B1 (en) System for cooling a gaseous intake fluid for an internal combustion engine, integrated into a cooling circuit of the engine
CN106949677B (en) Oil separator and air conditioner with same
CN220707697U (en) Condenser fixing structure for refrigeration air conditioning equipment
CN205425904U (en) Twoly advance singly to go out graphite heat exchanger

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20180309

RJ01 Rejection of invention patent application after publication